Episode Title:White Belt, Black Heart.Episode Description:While Splinter's sensei, Mogo-san, is visiting New York, a criminal gang of ninja, known as the Black Heart Gang, are terrorising the city with a crime spree, and Mogo-san's grandson, Yoku, is their leader. The Turtles & Splinter must stop Shredder & the Black Heart Gang from stealing secret maps of nuclear missile sites.